Oil boilers are heating systems that use oil as a fuel source to generate heat for residential or commercial spaces. They work by burning oil in a combustion chamber, which heats water that is then circulated through radiators or underfloor heating systems. This type of boiler is often chosen for its efficiency and ability to provide consistent warmth, especially in areas where natural gas is not available. These boilers come in various sizes and designs, making them suitable for different building types. Regular maintenance is essential to ensure optimal performance and safety. Additionally, oil storage tanks are required to hold the fuel, which can be located above or below ground.